Gas cock



Dec. 26, 1939. E. H. MUELLER GAS COCK Filed Sept. 9, 1938 o .E mu m we vm u A H! M .m E

BY m

Patented Dec. 26, 1939 UNITED ST TES rrENr orrcs 4 Claims.

This invention relates to a valve and particularly to a valve of the type useful as a gas cook for controlling the supply of gas to a gas burner.

The invention is directed especially to the provision of a valve for controlling a supply of gas to a double burner wherein a small supply ofgas is furnished to what may be termed a simmering burner and a larger supply of gas is furnished to a burner for a larger flame. The valve comprises a valve body with a valve plug rotatable between extreme positions, one of which is off and one of which is on.v As the rotatable valve member is moved from oil position, ports or passageways are aligned, first for supplying a small supply of gas to a simmering burner. As the rotatable valve member is further operated, it eventually reaches the full on position, at which point ports or passageways are aligned for the supply of gas to the main or large burner. The small supply of gas for the simmering burner, however, is not cut off once it is opened, with the result that gas is supplied to the simmering burner at the time gas is also supplied to the main burner, and is supplied to the simmering burner during the operation of the valve from the position where the ports or passageways for the simmering burner are first opened to the full on position. To this end, what may be termed a hold-over port or passageway, is provided for the supply of gas to the simmering burner during this operation of the valve member.

In the accompanying drawing:

Fig. l is a cross sectional view taken through a valve member constructed in accordance with the invention illustrating the valve body, the rotatable valve member and some of the passageways.

Fig. 2 is a view taken substantially on line 2-2 of Fig. l with the cap removed to shown underlying parts.

Fig. 3 is a cross sectional view illustrating some of the control mechanism. 7

Fig. 4 is an enlarged cross sectional view taken substantially on line 44 of Fig. 1 illustrating the parts in oii position.

Fig. 5 is a view similar to Fig. 4 illustrating the parts in a position with the valve partially open. for supplying gas to the simmering burner.

Fig. 6 is a cross sectional view similar to Fig. 5 showing the valve in a position through which it'moves from the positions shown in Figs. 5 and 7.

Fig. '7 is a cross sectional View similar to Figs. 4 and 6, inclusive, showing the valve in full on position.

The gas cook has a body 5 provided with a tapered bore 2 for the reception of a tapered plug valve member 3, The valve member has an extension 4 which may be screw threaded for attachment to a gas supply line. The body also has a projection on one side as illustrated at 5, which is of angular formation as shown in Fig. 1, and this projection has a passageway 6 and an intersecting passageway E. The passageways 6 and i may be drilled in the'body through the end of the projection 5, and the end is closed by a plug 8.

The passageway 6 leads into the valve chamber and the passageway i leads into the valve chamber near one end. An extension 9 has a passage way it, which leads to a relatively large outlet jet structure generally illustrated at l! of the usual construction. The body also has a projection which has a passageway I3. As illustrated, a tube I4 connects to the passageway 13 by means of a fitting l5, and on the end of the tube is a relatively small gas jet structure generally illustrated at Hi. Of course, Whether or not the outlet jet i6 is attached directly to the projecor recessed in the outer face of the plug as at 25 forming an enlargement, the purpose of which will presently appear. sageway through the plug, with the result that the small end of the valve chamber which connects into the passageway l. is closed oil .by the plug from the remaining portion of the valve chamber.

The large jet 5 l supplies a relatively large flow of gas to a main gas burner for frying or general cooking, while the small jet [6 supplies a small flow of gas to a secondary or smaller burner for simmering purposes. tI is well known how these burners may be arranged on a gas stove, and therefore they are not shown. The valve is in off position as illustrated in Fig. 4, at which time the supply passageway i is closed by the plug. In the operation of the plug it is turned counterclockwise as Figs. 2 and 4 to '7 are viewed, and when. the valve reaches a position substantially as shown in Fig. 5 gas flows from the passageway t into the end of the passageway 22 through passageway 23 and passageway 13, and thence through the jet iii to the simmering There is no axial pas-' isters with passageway l3. turned off the passageway 6 is first closed but the burner. The main burner remains closed because the passageway 6 is closed. The valve may then be rotated further counterclockwise to its limit of rotation where it takes the position substantially as shown in Fig. '7. In this position gas flows in through the passageway 23 into passageway 22 and out through the passageway l3 to the simmering burner. Also, gas flows through passageways 6 and 1 to the small end of the valve chamber, into passageway I0, and out through the passageway II to the main burner. Therefore, in this position both burners are turned on.

During the movement of the rotary valve member from the position of Fig. 5 to the position of Fig. '7, the supply of gas to the simmering burner is continued in an unbroken manner. The ports are arranged so that, before the passageway 23 moves out of registry with the passageway l3, the large portion 25 registers with passageway l3 so that the gas flow into the passageway I3 is unbroken. Also, before the lower end of the passageway 22 (as Fig. 5 is viewed) moves out of registry with the passageway 4, passageway 23 moves into partial registry with the passageway 4, thus continuing the flow of gas to the simmering burner. Upon continued movement, the upper end. of the passageway 22 (as Figs. 5 and 6 are viewed) moves into partial registry with passageway 53 before the enlarged portion 25 moves out of registry therewith to continue the flow of gas to the simmering burner, and when the passageway 22 approaches the position shown in Fig. 7 it registers with the passageway 6 and also reg- When the valve is simmering burner is fed with gas successively through the passageway 22, enlargement 25 and passageway 23 until passageway 23 moves out of registration with passageway l3.

In order to have the proper operation of a plug valve of this kind which is spring pressed on to its seat, it is necessary that the surfaces of the plug and valve chamber be lubricated. Only a small passageway 24 is desired as a hold-over port for the simmering burner, but this small passageway would be liable to plug up with grease if it opened directly at the periphery of the plug. The enlargement 25, however, is large enough to receive and retain some lubricant without blocking the small passageway 24. Furthermore, the increased area provided by the enlargement 25 increases the feasibility of so positioning the ports that the passageway l3 remains connected to some one passageway in the plug from the time the valve is initially turned. on and through all of its on positions.

This valve, for the most approved operation, should be used with an arrangement for providing an intermediate stop in the simmering position substantially as shown in Fig. 5. A cap 38 is secured to the valve body, through which the stem extends. Mounted on the D-shaped part of the stem for rotation therewith is a washer 3! which has a relatively long projection 32, and an opposite shorter projection 33. A second washer 34 has two oppositely positioned projections in the form of cams 35 and 36, and this washer is keyed to the valve body by a projection 3'5. The washer 34 is axially shiftable but is held against the washer 3| by a coil spring 38, which reacts against the valve body. A friction washer is illustrated at 40 positioned between the cap and the washer 3|. A sleeve 4| extends through the washer 34 and abuts against the washer 3| and is acted upon by a coil spring 42. The spring reacts against the sleeve and cap to urge the plug valve member against its seat.

The projections 35 preferably have slow lift cam faces on one side, as illustrated at 45, and quick lift cam faces on the opposite side as shown at 46. The valve body is cut away to provide a stop 48 and another stop 49.

In the off position the projection 32 strikes the stop 48. As the valve member is turned counter-clockwise the projections 32 and 33 strike the quick lift cam surfaces 46. This sets up a resistance and substantially stops the valve with the simmering burner on as shown in Fig. 5. By applying additional turning torque the projections ride over the quick lift cam surfaces and force the washer 34 axially, compressing the spring 38. In the full on position, the projection 32 strikes the stop 49. The projection 33 is shorter than projection 32 and rides within the housing, and while it functions on the projection 35 it does not function on the stops of the valve body. When the valve is turned off the projections ride easily over the slow lift cam faces 45 and 46. The valve can be nicely operated from off position to simmering position, with the projection 32 stopping the valve in one position and the quick lift cam surfaces stopping the valve in the other position. On the other hand, the valve may be operated from full on position to a simmering position with the projections stopping upon the slow lift cam surfaces.

I claim:

1. A gas cook for controlling the flow of gas to a double gas burner comprising, a body having a valve chamber, an inlet passage leading to the chamber, a first outlet passage leading from the chamber, a second outlet passage leading from the chamber, a valve member rotatably disposed in the chamber and having a transverse passage extending therethrough, a second passage connecting into the transverse passage, said valve member being rotatable to, in one position, close the said inlet passage, in a second position to bring the transverse passage into registry with the inlet passage and the second passage in the rotatable member into registry with the first outlet passage of the body, and in a third position to bring the second passage in the rotatable member into registry with the said inlet passage and the transverse passage into registry at opposite ends with the first and second outlet passages of the valve body, and a small holdover port in the rotatable member connecting into the transverse passage and having an enlarged countersunk portion at the periphery of the rotatable member,

and arranged to register with the first outlet of the valve body in a position of the rotatable member intermediate the above mentioned second and third positions of the rotary valve members.

2. A gas cook for controlling the flow of gas to a double gas burner comprising, a body having a valve chamber, an inlet passage leading to the chamber, a first outlet passage leading from the chamber, a second outlet passage leading from the chamber, the inlet passage being disposed approximately at right angles to the outlet passages and the outlet passages being substantially diametrically opposite each other, a valve member rotatably disposed in the chamher and having a transverse passage extending therethrough, a second passage connecting into the transverse passage, said valve member being rotatable to, in one position, close the said inlet passage, in a second position to bring the transverse passage into registry with the inlet passage and the second passage in the rotatable member into registry with the first outlet passage of the body, and in a third position to bring the second passage in the rotatable member into registry with the said inlet passage and the transverse passage into registry at opposite ends with the first and second outlet passages of the valve body, and a small hold-over port in the rotatable member connecting into the transverse passage and having an enlarged countersunk portion at the periphery of the rotatable member, and, located circumferentially between one end of the transverse passage and the second passage in the rotatable'member, and arranged to register with the first outlet of the valve body in a position of the rotatable member intermediate the above mentioned second and third positions of the rotary valve members.

3. A gas cook for controlling the flow of gas to a double gas, burner comprising, a body having a valve chamber, an inlet passage leading to the chamber, a first outlet passage leading from the chamber,-a second outlet passageleading from the chamber, a projection on one side in which the second outlet passage is located, a passage in the valvebody axially disposed relative to the chamber, another passage in the said projection connecting the second outlet passage and the axially disposed passage, a valve member rotatably disposed in the chamber and having a transverse passage extending 'therethrough, a second passage connecting into the transverse passage, said valve member being rotatable to,

in one position, close the said inlet passage, in

a second position to bring the transverse passage into registry with the inlet passage and the second passage in the rotatable member into registry with the first outlet passage of the body,

and in a third position to bring the second passage in the rotatable member into registry with the said inlet passage and the transverse passage into registry at opposite ends with the first and second outlet passages of the valve body, and a small hold-over port in the rotatable member connecting into the transverse passage and having an. enlarged countersunk portion at the periphery of the rotatable member, and arranged to register with the first outlet of the valve body 1 a'valve chamber, an inlet passage leading to the chamber, outlet means leading from the chamber, a valve member in the chamber having passageways for the fiow of gas therethrough from the inlet passage to the outlet means and including two ports angularly disposed relative to each other, said valve member being rotatable in the chamber whereby it may be positioned to close the inlet passage, to register one of the two ports with the inlet passage and to register the other of the two ports with the inlet passage for the control of the flow of gas to the outlet means, and auxiliary port means in the valve positioned between the said angularly disposed ports arranged to register with the inlet as the valve is moved from a position where one of the ports registers with the inlet passage to a posi-' tion where the other port registers with the inlet passage for the continued flow of gas through the gas cook at such time.

' ERVIN H. MUELLER. 

